Take it to the limit in the Spira Scorpius high performance trainer. Featuring WaveSpring® cushioning, this men's running shoe is designed with two lightweight, stainless steel springs in the forefoot and one in the heel for maximum energy efficiency and cushioning. The open air mesh upper provides maximum breathability, while the compression-molded EVA midsole and TPU shank lend support and stability. The high-abrasion rubber outsole incorporates forefoot flex grooves for flexibility and quick transitions in the Spira Scorpius running shoe.Air mesh upperCompression-molded EVA midsoleRemovable, molded EVA insoleRubber outsoleSpira Dynamic Fit System™TPU shankWaveSpring® TechnologyStyle Numbers: SRP111, SRP11WView All Spira ProductsCustomer Reviews for Men's Spira Scorpius